content: /**
   * Copyright (c) 2016-present, RxJava Contributors.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package io.reactivex.observable.internal.operators;
  
  import java.lang.ref.WeakReference;
  
  import org.junit.*;
  
  import io.reactivex.common.exceptions.TestException;
  import io.reactivex.common.functions.Function;
  import io.reactivex.observable.*;
  import io.reactivex.observable.observers.TestObserver;
  
  
  public class ObservableDetachTest {
  
      Object o;
  
      @Test
      public void just() throws Exception {
          o = new Object();
  
          WeakReference<Object> wr = new WeakReference<Object>(o);
  
          TestObserver<Object> ts = new TestObserver<Object>();
  
          Observable.just(o).count().toObservable().onTerminateDetach().subscribe(ts);
  
          ts.assertValue(1L);
          ts.assertComplete();
          ts.assertNoErrors();
  
          o = null;
  
          System.gc();
          Thread.sleep(200);
  
          Assert.assertNull("Object retained!", wr.get());
  
      }
  
      @Test
      public void error() {
          TestObserver<Object> ts = new TestObserver<Object>();
  
          Observable.error(new TestException()).onTerminateDetach().subscribe(ts);
  
          ts.assertNoValues();
          ts.assertError(TestException.class);
          ts.assertNotComplete();
      }
  
      @Test
      public void empty() {
          TestObserver<Object> ts = new TestObserver<Object>();
  
          Observable.empty().onTerminateDetach().subscribe(ts);
  
          ts.assertNoValues();
          ts.assertNoErrors();
          ts.assertComplete();
      }
  
      @Test
      public void range() {
          TestObserver<Object> ts = new TestObserver<Object>();
  
          Observable.range(1, 1000).onTerminateDetach().subscribe(ts);
  
          ts.assertValueCount(1000);
          ts.assertNoErrors();
          ts.assertComplete();
      }
  
  
      @Test
      @Ignore("Observable doesn't do backpressure")
      public void backpressured() throws Exception {
  //        o = new Object();
  //
  //        WeakReference<Object> wr = new WeakReference<Object>(o);
  //
  //        TestObserver<Object> ts = new TestObserver<Object>(0L);
  //
  //        Observable.just(o).count().onTerminateDetach().subscribe(ts);
  //
  //        ts.assertNoValues();
  //
  //        ts.request(1);
  //
  //        ts.assertValue(1L);
  //        ts.assertComplete();
  //        ts.assertNoErrors();
  //
  //        o = null;
  //
  //        System.gc();
  //        Thread.sleep(200);
  //
  //        Assert.assertNull("Object retained!", wr.get());
      }
  
      @Test
      public void justUnsubscribed() throws Exception {
          o = new Object();
  
          WeakReference<Object> wr = new WeakReference<Object>(o);
  
          TestObserver<Long> ts = Observable.just(o).count().toObservable().onTerminateDetach().test();
  
          o = null;
          ts.cancel();
  
          System.gc();
          Thread.sleep(200);
  
          Assert.assertNull("Object retained!", wr.get());
  
      }
  
      @Test
      @Ignore("Observable doesn't do backpressure")
      public void deferredUpstreamProducer() {
  //        final AtomicReference<Subscriber<? super Object>> subscriber = new AtomicReference<Subscriber<? super Object>>();
  //
  //        TestObserver<Object> ts = new TestObserver<Object>(0);
  //
  //        Observable.unsafeCreate(new ObservableSource<Object>() {
  //            @Override
  //            public void subscribe(Subscriber<? super Object> t) {
  //                subscriber.set(t);
  //            }
  //        }).onTerminateDetach().subscribe(ts);
  //
  //        ts.request(2);
  //
  //        new ObservableRange(1, 3).subscribe(subscriber.get());
  //
  //        ts.assertValues(1, 2);
  //
  //        ts.request(1);
  //
  //        ts.assertValues(1, 2, 3);
  //        ts.assertComplete();
  //        ts.assertNoErrors();
      }
  
      @Test
      public void dispose() {
          TestHelper.checkDisposed(Observable.never().onTerminateDetach());
      }
  
      @Test
      public void doubleOnSubscribe() {
          TestHelper.checkDoubleOnSubscribeObservable(new Function<Observable<Object>, ObservableSource<Object>>() {
              @Override
              public ObservableSource<Object> apply(Observable<Object> o) throws Exception {
                  return o.onTerminateDetach();
              }
          });
      }
  }
  